Command Codes
Freeze Codes
Source, Hold, & Priority Codes
Reason Codes
Transaction Codes
100

This CC with definer A is used to request all tax module information for a specific tax period.

What is TXMODA ?

100

This freeze is set when a duplicate return (TC 976), subsequent return (TC 977) or a TC 971 with action code (AC) 010 or AC 012-015 (amended return), posts to an account.

What is -A ?

100

What HC has the action of no hold code?

What is 0 ?

100

What is the RC for income from wages, salaries, tips, etc. 

What is 007 ?

100

This TC indicates the issuance of Refund of Overpayment?

What is 846 ?

200

This CC with definer T displays transactions posted to an account. It also shows filing status, exemptions, and other account information. It does not show pending transactions, case controls, or history items, unpostables, or most resequencing transactions.

What is IMFOLT ?

200

This freeze is set when there is an additional tax liability pending and a TC 570 posts to a module. 

What is -R ?

200

What PC is used to release excess Estimated Tax Credit Freeze J- and -X freeze?  

What is 8 ?

200

This RC for Net Investment Income Tax.

What is 137 ?

200

This TC changes the address of an account on the MF.

What is 014 ?

300

This CC is used to research the Centralized Authorization File (CAF) information regarding authorizations that taxpayers have given third parties.

What is CFINK ?


300

This freeze is set when a TP files a return that posts to an invalid IMF segment or when a TP fails to provide requested information resulting in an unprocessable code.

What is I- ?

300

Commonly used when setting a ME; what SC do you use to inform the TP that they made a mistake on their account and we corrected the error when we adjusted their account?

What is 6 ?

300

This RC is for the Health Coverage Tax Credit.

What is 072 ?

300

What TC indicates a tax liability assessed from the original return establishes a tax module? 

What is 150 ?

400

This CC is used when validating additional children and credits claimed on amended returns (1040X). 

What is DDBCK ?


400

This freeze is the undelivered refund check freeze set when the TC 740 generates when a check is returned as undeliverable by the post office

What is S- ?

400

What HC prevents the issuance of the adjustment notice for the adjustment transaction on which it is entered but releases the refund if available?

What is 3 ?

400

TRIpppLE $$$

What are the two RCs for the Education Credit?

What is 035 & 106 ?

400

What TC credits the tax module with a payment received with the return?

What is TC 610 ?

500

Use this CC to enter requests for original paper documents, copies, information, etc.

What is ESTAB ? 


500

DOUbbLE $$

These two freeze codes are initiated by and assigned to Criminal Investigation (CI) Scheme Development Centers (SDC) in the campuses. 

What is Z-|-Z ?

500

Which PC performs the action of use with adjustments in block 740-769 to have an unsubstantiated math error protest sent to Examination?

What is 7 ?

500

How many RCs are there for the "Advanced Child Tax Credit?"

What is 4 ?

500

This TC indicates Automated Underreporter involvement and includes status updates with process codes.

What is 922 ?

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